October 2022 - vsnet-newvar - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-newvar 9452] MASTER OT J001204.00-412337.4: 7th rebrightening
by Taichi Kato 11 Oct '22

11 Oct '22

MASTER OT J001204.00-412337.4: 7th rebrightening Josch Hambsch detected another rebrightening on Oct. 10 (16.2 mag). The object had been rising before this rebrightening.

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[vsnet-newvar 9451] Swift J1913.1+1946
by Taichi Kato 09 Oct '22

09 Oct '22

Swift J1913.1+1946 16.6-mag X-ray transient. ATEL #15650 ATEL #15650 Title: Swift J1913.1+1946 a new bright hard X-ray and optical transient Author: S. Dichiara (PSU), J. D. Gropp (PSU), J. A. Kennea (PSU), N. P. M. Kuin (UCL-MSSL), A. Y. Lien (U Tampa), F. E. Marshall (NASA/GSFC), A. Tohuvavohu (U Toronto) and M. A. Williams (PSU) report on behalf of the Neil Gehrels Swift Observatory Team Queries: jak51(a)psu.edu Posted: 9 Oct 2022; 14:44 UT Subjects:Optical, X-ray, … [View More]

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[vsnet-newvar 9450] ASASSN-21cw likely superoutburst
by Taichi Kato 09 Oct '22

09 Oct '22

ASASSN-21cw likely superoutburst YYYYMMDD(UT) mag observer 20220924.1525 14.835zr (ZTF Alert DC mag (Masci+ 2019)) 20220924.2318 15.133zg (ZTF Alert DC mag (Masci+ 2019)) 20220928.1463 15.229zr (ZTF Alert DC mag (Masci+ 2019)) 20220928.1503 15.574zg (ZTF Alert DC mag (Masci+ 2019)) 20220930.1538 15.691zg (ZTF Alert DC mag (Masci+ 2019)) 20220930.1721 15.321zr (ZTF Alert DC mag (Masci+ 2019)) 20221004.1749 15.537zr (ZTF Alert DC mag (Masci+ 2019)) 20221004.2403 16.… [View More]

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[vsnet-newvar 9449] ASASSN-22mr: new WZ Sge-type dwarf nova
by Taichi Kato 09 Oct '22

09 Oct '22

ASASSN-22mr: new WZ Sge-type dwarf nova Berto Monard and Josch Hambsch have reported observations. The data show clear double-humped superhumps with a period of 0.0534(2) d (full amplitude 0.14 mag). 224117.532 -675916.24 (2000.0) Gaia_DR2_6385763697885620480 plx=3.080(0.730) dismod=7.6 pmra=7.201(1.050) pmdec=-1.210(1.120) G=20.444 BP=20.502 RP=20.160 224117.533 -675916.24 (2000.0) Gaia_EDR3_6385763697885620480 plx=2.711(0.552) dismod=7.8 pmra=6.612(0.477) pmdec=1.564(0.553) G=20.396 BP=… [View More]

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[vsnet-newvar 9448] N080829A possible superoutburst
by Taichi Kato 08 Oct '22

08 Oct '22

N080829A possible superoutburst YYYYMMDD(UT) mag observer 20221003.5749 <155c (Yutaka Maeda) 20221005.2237 16.157zr (ZTF Alert DC mag (Masci+ 2019)) 20221005.2537 15.867zg (ZTF Alert DC mag (Masci+ 2019)) 20221005.5678 <156c (Yutaka Maeda)

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[vsnet-newvar 9447] SDSS J001153.08-064739.1: most likely SU UMa star
by Taichi Kato 07 Oct '22

07 Oct '22

SDSS J001153.08-064739.1: most likely SU UMa star Josch Hambsch has recored a 0.2 mag hump. Although the baseline is one orbital cycle, the profile and amplitude suggest a superhump. This object is very interesting since it is in the period gap and has an evolved secondary. The reported mass ratio is above 0.25 and the detection of superhumps is great astrophysical importance. Continued observations are encouraged.

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[vsnet-newvar 9446] ASASSN-21gw superoutburst
by Taichi Kato 06 Oct '22

06 Oct '22

ASASSN-21gw superoutburst Superhumps were detected in 2021 May. YYYYMMDD(UT) mag observer 20220927.5026 15.264zr (ZTF Alert DC mag (Masci+ 2019)) 20221004.4416 15.540zg (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-newvar 9445] ASASSN-20bb likely superoutburst
by Taichi Kato 06 Oct '22

06 Oct '22

ASASSN-20bb likely superoutburst Type from ZTF data. YYYYMMDD(UT) mag observer 20221004.4536 16.524zg (ZTF Alert DC mag (Masci+ 2019)) 20221004.4541 16.532zg (ZTF Alert DC mag (Masci+ 2019)) 20221004.4819 16.798zr (ZTF Alert DC mag (Masci+ 2019)) 20221004.4824 16.799zr (ZTF Alert DC mag (Masci+ 2019))

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[vsnet-newvar 9444] 1RXS J185310.0+594509 superoutburst
by Taichi Kato 05 Oct '22

05 Oct '22

1RXS J185310.0+594509 superoutburst YYYYMMDD(UT) mag observer 20220923.2220 18.685zg (ZTF Alert DC mag (Masci+ 2019)) 20220925.1568 18.605zg (ZTF Alert DC mag (Masci+ 2019)) 20220927.1984 18.451zg (ZTF Alert DC mag (Masci+ 2019)) 20220927.6203 <156C (Masayuki Moriyama) 20220929.1309 18.315zr (ZTF Alert DC mag (Masci+ 2019)) 20220929.1967 18.459zg (ZTF Alert DC mag (Masci+ 2019)) 20220929.494 172C (Mitsutaka Hiraga) 20220929.5232 <158c (Yutaka Maeda) … [View More]

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[vsnet-newvar 9443] SDSS J001153.08-064739.1 rare bright outburst
by Taichi Kato 05 Oct '22

05 Oct '22

SDSS J001153.08-064739.1 rare bright outburst Moriyama-san has pointed out that this object is undergoing a rare bright outburst. The orbital period is in the period gap and a superoutburst can be expected. https://ui.adsabs.harvard.edu/abs/2014ApJ...790...28R/abstract Using ZTF data, I obtained an orbital period of 0.1002809(1) d. The phased light curve show clear EW-like modulations with an amplitude of 0.25 mag. YYYYMMDD(UT) mag observer 20220703.4593 17.813zg (Zwicky … [View More]

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vsnet-newvar October 2022